The first fully functioning mechanical beadlock
for the single piece drop centre wheel.
This is the first fully functional active beadlock for the single piece drop centre wheel.
This new generation CBR Beadlock makes the need for two-piece, multi-piece and specialist wheels obsolete when beadlock is a necessity.
CBR Beadlock allows low pressure operations and CTI on the single piece wheel.
Significant unspring weight reduction is now a reality. Combining a very light beadlock/runflat with the lighter single piece wheel, the combination is far lighter than conventional runflat inserts with two-piece or multi-piece wheels. CBR Beadlock therefore reduces weight, with a corresponding increase in payload capacity.
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Fast fitting – using normal tyre fitting equipment, manual or machine – takes approximately 10 minutes more than fitting the tyre by whichever method is chosen
Run Flat Systems are introducing a range of 20×10 and 20×11 5,500kg capacity single piece forged aluminium wheels to complement CBR Beadlock. The combination offers an industry leading light weight solution.
Weight
The approximate weight for CBR Beadlock for a 20”x10” military wheel is 8kg.
Beadlock
CBR Beadlock sits on the wheel rim with a close fit between the tyre’s beads. When it is tightened on to the wheel, inside the tyre it is compressed against the wheel which forces the flexible base of the runflat laterally into the tyre’s beads, creating a strong beadlock force.
Adjustability
Tyre bead widths vary, so all CBR Beadlock models feature an adjustable base. This ensures the required beadlock force to guarantee excellent performance in all circumstances, regardless of tyre choice.
No ‘rubber’ components required for beadlock
Some consider it necessary for beadlock components to be made from rubber in order to cater for varying tyre bead thicknesses. This can compromise lateral force, providing good beadlock with thick beads but poor beadlock with thin beads. It is also a relatively heavy material and so was not included within the design brief for Runflat CBR. Instead, the new flexible cantilever design, adjustable width base and advanced materials ensures constant beadlock force regardless of tyre make, with the added benefit of reduced weight.
Testing
CBR Beadlock is a new product so has been subject to a very rigorous testing regime.
At the design stage each beadlock type is assessed through Finite Element Analysis (FEA) and Failure Mode and Effect Analysis (FMEA), then static laboratory tested, endurance and longevity tested, followed by track testing and durability trials.
FEA is used at the design stage to assesses overall strength, beadlock effect and lateral force.
Once the design has been adjusted in line with the findings of FEA and FMEA testing, prototype components are manufactured in order to continue to static trials, which are carried out at Boeing’s Advanced Manufacturing Research Centre. Strength, weight capacity and shock absorption (in the event of running totally deflated) and beadlock force and effect are measured.
Results are then analysed and components are fine-tuned and re-tested until the required parameters are met.
Click on our technical information page for more details.
